www.mkenterprise.com - 'Site no longer exists' - Scam?

I have been with them for a while, put $1250 in my drop ship account. Just went to send out my first order from an ebay buyer, and their site is down. It says this site no longer exist. I went to their sister site, Link hidden: Login to view also down.

i called them , no one picked up. Did i just get scammed by these guys? whats going on!